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December Weather in Running Springs, United States

Last updated: June 24, 2025

In December, the average temperature in Running Springs, United States hovers around 7°C (46°F). Visitors should prepare for a potential range, as temperatures can dip to a chilly -7°C (19°F) or rise as high as 22°C (71°F). Expect 45 mm (1.8 in) of precipitation over 4 days, with an average humidity level of 75%.

December Temperature in Running Springs

In December in Running Springs, the average temperature is 7°C (46°F). Maximums can reach 22°C (71°F), while minimums can dip to as low as -7°C (19°F). Be prepared for a wide range of temperatures when traveling during this time.

December Weather in Running Springs: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Running Springs, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Running Springs, December typically has an average temperature of 7°C (46°F), with highs reaching up to 22°C (71°F) and lows dropping to around -7°C (19°F).
JanFebMarAprMayJunJulAugSepOctNovDec454649576172777771615345
Data source: Temperature data for Running Springs generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Running Springs

In Running Springs in December, the total precipitation amount is 45 mm (1.8 in) over the course of 4 days.

December Precipitation Trends in Running Springs

The chart displays monthly precipitation patterns in Running Springs, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Running Springs, December typically receives around 45 mm (1.8 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec4446422114529191291645
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Running Springs

In Running Springs in December humidity is 75%. With an average temperature of 7°C (46°F), this humidity feels like a chilly dampness that clings to your skin, making every step outdoors feel heavier and the cold seep into your bones, which can be quite uncomfortable for traveling.

December Average Humidity in Running Springs

This chart illustrates the average monthly humidity levels in Running Springs, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Running Springs is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%80%69%57%45%34%29%28%42%54%68%75%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Running Springs

In Running Springs in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Running Springs for better planning.

Maximum UV Index Levels in Running Springs for December

The chart shows the monthly maximum UV Index (UVI) for Running Springs in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Running Springs typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec469111112121110854
Data source: Running Springs December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How December Weather in Running Springs Compares to Other Months

Weather in Running Springs varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Running Springs, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Running Springs, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (46°F)44 mm (1.7 inches)76%moderate
February Weather8°C (46°F)46 mm (1.8 inches)80%high
March Weather9°C (49°F)42 mm (1.6 inches)69%very high
April Weather14°C (57°F)21 mm (0.8 inches)57%extreme
May Weather16°C (61°F)14 mm (0.6 inches)45%extreme
June Weather22°C (72°F)5 mm (0.2 inches)34%extreme
July Weather25°C (77°F)29 mm (1.1 inches)29%extreme
August Weather25°C (77°F)19 mm (0.8 inches)28%extreme
September Weather22°C (71°F)12 mm (0.5 inches)41%very high
October Weather16°C (61°F)8 mm (0.3 inches)54%very high
November Weather12°C (54°F)16 mm (0.6 inches)68%moderate
December Weather7°C (46°F)45 mm (1.8 inches)75%moderate

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